⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Hydrangea cordifolia in version 1.1 of The Plant List.
This name is a synonym of Hydrangea petiolaris .
The record derives from Tropicos which reports it as a synonym (record 50169644
) with original publication details: Fl. Jap. 1: 113, pl. 59, f. 2 113 1839.
Full publication details for this name can be found in IPNI: urn:lsid:ipni.org:names:791568-1
.